GA High Comp Build

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fuck yerrrrr, B13 doesnt fit uk ga16 but a b14 sentra pulley does, time for bottom end balance!!!
 
Apology for what? Won't be done by the tubbs meet, looking at couple of weeks to get the cylinder head flowed and bottom end balanced. Fingers crossed it will be in and mapped by early July
 
Made a little progress today as i had the day off.

Went to test fit a piston yesterday and the rod was too wide to fit into the D16 pistons, took them down Chesman motorsport today to get them ground back 2mm. Fitted a piston (pictures to follow), slapped the cylinder head on to check valve to piston clearance at TDC. . . 6mm translates to shit loads.

Bloke assured me i wouldnt lose any strength as the material that was removed is not a stress point so no worries about shot peening etc

The D16 pistons sit 0.7mm lower in the cylinder than stock GA even tough the compression height it supposed to be the same 20mm as GA.

Next I need to see how this 0.7mm difference affects my expected compression ratio and work it out exactly, confident of it still being around 12:1 though, hopefully get that done at the weekend.

Once YCP get back to me on how much the piston will expand i can take the whole bottom end to Chesmans and get it balanced, bored and honed.

So close, getting excited now. I can actually get stuck in.
 
ive not forgotten dude, Andy said any day after the 10th, ive said the 12th, but ill ring him to remind him tomorrow. Will let you know what date he confirms.
 
Finally got a reply from YCP about bore clearance of 0.030mm so now the lot can go off to chesmans for machining and balancing.

Now I have removed weight from the bottom end via under drive pulley and flywheel but I'm undecided in if I should lighten the crank itself
 
As long as you don't cut the weights off it will be fine ;)

Joe has had a fair bit removed from his crank

-Phone-
 
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